Home / 11,929.21-16,461.12-6,623.47

Finding the Fourth Proportional to 11,929.21, 16,461.12 and 6,623.47

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Solution

The fourth proportional to 11,929.21, 16,461.12 and 6,623.47 is: 9,139.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.21 : 16,461.12 = 6,623.47 : x
  2. Step 2: Convert to fraction form
    11,929.21/16,461.12 = 6,623.47/x
  3. Step 3: Cross multiply
    11,929.21x = 16,461.12 × 6,623.47
  4. Step 4: Simplify right side
    11,929.21x = 109,029,734.49
  5. Step 5: Solve for x
    x = 109,029,734.49/11,929.21
  6. Step 6: Final answer
    x = 9,139.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.